Spring-tire.



H. M. LAKOFF.

SPRING TIRE. APPLICATION FILED OCT. 15, 1913..

Patented June 30, 1914.

sir onirica HENRY M. LAKOFF, 0F PHILADELPHIA, UPENNSYLVANIA.

sentire-TIRE.

Specification of Letters Patent.

Application led October 15,1913. Serial No. 795,19S.

ToaZZ whom t may concern:

Be it known that I, HENRY M. LAKoFr, a ycitizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in bpring-Tires, of which vthe following 1s a specification.

My invention relates to improvements in spring tires, the object of the invention being to provide an improved .elastic cushion which may be inserted within the shoe of an ordinary tire and takethe place of the inner inflated tube, thus overcoming the expense of blowV outs and insuring a resilient tire to absorb shocks 4 andl vibrations.

A further object is to provide an improved spring tire of the character stated in which a circular seriesfof bow springs are secured to a ring and connected by an outer ring of sheet metal which bridges the gaps between the springs, yet permitsfree lateral eXpansion ofthe springs to perform their necessary function when the tire is in use.

With theseand other objects in view, the invention consists in certain novel features of construction and combinations and ar- :rangementsv of parts as will be more fully hereinafter described and pointed -out in the claims.

1n the accompanying drawings: Figure 1 is a 'view in side elevation partly in longitudinal section illustrating my improvements. Fig. 2 is a view in transverse section on an enlarged scale onthe line 2-2 of Fig. 1. Fig. 3 is a fragmentary perspective view of a part of the spring supporting ring, and Fig. 4 is a similar view of the outer metal ring9.l

1 represents an ordinary wheelfhaving the ordinary felly 2 and the ordinary sectional rim 3.

4 is a shoe such as commonly employed with inner inflated tubes, but instead of providing such an inner inflated tube, I employ my improved spring tire which consists ofl a ring 5 fitting the rim 3 and provided with a circular series of transversely positioned bow springs 6. The ends of the bow springs 6 are secured in recesses 7 in opposite sides of ring 5 by means of transverse rivets8, and said bow springs are curved or shaped as desired, but preferably to conform to the ordinary shape of tire in general use; lnside of each tspring 6, a circular spring 14 ed by a sheet metal ring 9 to which thel y springs are secured by the rivets 13. This' ring 9 1s preferably of steel or other spring elastic metal, and is curved transversely to conform to the shape of the springs 6. lhe side'edges` ofthe ring`9 extend around the .spr1ngs, and are provided withrecesses 10 1n opposite sides through which recesses, the springs 6 are free to expand transversely of patentes aan@ so, reich the tire yet the metal ring 9 eft'ectually l gaps between the springs, not

bridges the outer ends of the springs, but

only at the also between the springs at the sides of the.

tire, so that the ring 9 compels the Asprings to operate in unison to give to thev tire its proper resiliency and strength, and not compel each sprin to sustain in turn the entire stresses o the tire. By constructing the ring 9, so that it extends at least half way around the tire and more than half way, as seen in Fig. 2, the shoe is strengthened at its sides, 'not only at the springs, but at points between the springs as well.

The ring 5 is provided with a recess 11 to receive a lug 12 o n rim 3, rotary movement of ring 5 on the rim, yet allow the ring 5 with its springs to be readily moved oft' of the rimwhen the sectional rim is separated as will be understood., Various slight changes might be made in the general form and arrangementof parts described Without departing from my invention, and hence l do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall Within the spirit and scope of the appended claims.

Havin0r thus described my invention, what l claaim as new and desire to secure by Letters Patent is:

1. A spring tire comprising a ring adapted to be positioned around a rim between the sides of a shoe, a circular series of bow springs secured at their ends to opposite sides of the rin and conforming in shape to the shape of tie shoe in cross section, an outer ring of-sheet metal secured to each of the springs and curved transversely in conand prevent any formity to the shape of the springs, and said outer ring extending approximately half Way around the spring and recessed at opposite sides through which recesses the springs are 'free to expend, substantially as described. '2. A spring tire comprising a ring sdapt ed to be positioned around a rim'between the sides of a. shoe, e circular series-of bow springs secured at their ends to opposite' sides of the ring and conforming 'inshspe to shape of the Vshoe in crossseetion,l en? outer ring of sheet metal secured toezien-of j the springs and curved transversely .incon-` formlty to the shape of the springs, and said outer ring extending zi'pproxirnetelyy half' -opposite sides throng springs arefree to ed to be positioned around Le rim between the sides'of a shoe, a circular series of bow v springs secured ata their ends to opposite sides ofthefring and conforming in shape to the Sharpe, of the shoe in cross-section, an outer ring of sheet metal securedftdeach of the springs and curved transverselyin conformity tothe shape of the springs, and

said; outer ringextending y approxlmately half way around the spring and Areeessed at f.

y which recesses the v expencl, and v air'circular series of Y circular springs. loo'ated etl right V`Varngles-tothe `irst-:mentioned springs and between ther-iirst-Inentioned springs and the first-mentioned ring and secured to both, substantially asdescribed.

In testimony whereof I have 'signed my name to this specification 'in the presence of two subscrbin Witnesses, j

' i 'IENRY lM. LAKOFF.

Witnesses Y M. E. Dr'ri'ms,v :i i CHAsEA. Porre. 

